Updates progress from the Early Access update channel to Normal on a regular cadence. The following features, preview features, improvements, and bug fixes are available in the Normal update channel.

Note:

This article doesn’t list all changes in the Normal channel, just a subset. For the full and up-to-date set of changes available, see the information in the XenCenter Updates view.

Apr 14, 2025

Checksum: b604499e37ac82111f883dc38a75b799899a7d9019052912866581d7abfc51fe

These updates include the following new features:

• Add new guest template CentOS Stream 10 (preview).
• The Ubuntu 24.04 guest template is no longer in preview and is now fully supported.

These updates include the following improvements:

• XenServer now sends telemetry information to your Citrix License Server. For more information, see Data governance.
• Begin transition to use OpenSSL 3.0.9.
• Improvements to the performance and reliability of the high availability (HA) mechanism, particularly in larger (>16 host) pools.
• For GFS2 and XFS SRs, improved robustness against and clean up of unexpected power loss or host fencing.
• Improvements to the management of GFS2 SRs under load.
• Enable and disable SSH access for hosts and pools from the xe CLI.
• Add Ethtool support for 200G NIC speed.
• Update the qla2xxx driver to v10.02.13.00-k.
• Added prechecks on the emergency reenable TLS verification command so that it can now only be used when TLS verification is enabled in the pool.
• Gracefully handle the error when an HTTP header contains invalid data.

These updates contain fixes for the following issues:

• A regression in RRD format makes XenCenter unable to parse historical RRD data.
• XenCenter might sometimes show the CPU usage as negative or more than 100 percent.
• A cluster host can sometimes be fenced during shutdown.
• An issue in vGPU port and memory concurrent register.
• Reboot and shutdown issues on AMD caused by local APIC ESR interrupts.
• Some diagnostics logging can cause VDI deactivate on LVM SRs to freeze when an unrelated SMB3 SR is unresponsive.
• The log config file might be overwritten during an update.

These updates contain upstream code changes for the following issues:

• CVE-2015-2716 - Buffer overflow in the XML parser.
• CVE-2025-1713 – Deadlock potential with VT-d and legacy PCI device pass-through.

Mar 13, 2025

Checksum: aef84a77e80596eba799a7ab4a05a571bd3035aac07b8d86a77413c6854b5dac

These updates contain fixes for the following issues:

• When enabling storage multipath from XenCenter with the host in maintenance mode, the multipath status was not updated when exiting maintenance mode.
• Under some conditions when using Intellicache, the storage I/O process can encounter an error and stop responding to requests for data reads.
• PVS cache VDIs sometimes are not unmounted correctly.
• The GFS2 SR might not be attached correctly after detaching.
• If a user-supplied certificate file contains extraneous content, the SSL certificate parsing fails with the error “CERTIFICATE_LIBRARY_CORRUPT”.
• Errors can occur when a VM is shutdown during migration.
• Errors can occur when IGMP snooping is applied on non-managed network interfaces.
• When XenServer is under stress an IO_PAGE_FAULT can occur.

These updates include the following improvements:

• Improve the usability of the licensing check on toolstack startup
• Handle the host certificate refreshing period gracefully.
• Handle errors gracefully when IPMI readings are not available during toolstack restart.
• Reduce PCI config reads.

These updates contain upstream code changes for the following issues:

• CVE-2024-37891
• CVE-2023-45803
• CVE-2023-43804

Feb 27, 2025

Checksum: 680075398507c76d3c20bdb87787d90aa1a2d649f33fa3408e4dc6baa3e6ca73

These updates include the following improvements:

• Update the display name to XenServer 8.4. For more information, see https://www.xenserver.com/blog/featured/xenserver-8-is-really-xenserver-8-4/.

Feb 13, 2025

Checksum: a46c1e09c58201616c747c7d3f2d169c5de0c7df8dea079f9b515a2123589edb

These updates contain fixes for the following issues:

• If there are connectivity issues between the pool coordinator and a host in the pool, a VM on the host that is rebooted during or after the connectivity issue might become unresponsive or might fail to start with the error: “an emulator required to run this VM failed to start”.
• In pools with a large number of hosts, changing the pool coordinator can fail and leave the proposed new coordinator in a broken state. After this failure, XenCenter cannot connect to either the old or the new pool coordinator. To recover any pools that had previously experienced this issue run the commands on the original pool master: xe pool-emergency-transition-to-master and xe pool-recover-slaves.
• Cross-pool migration can fail for halted VMs.
• Storage operations on one host can get stuck waiting for a response from an external process while holding an exclusive lock, which prevented other hosts from performing required operations.
• In a pool with a GFS2 SR, sometimes a failure in the distributed lock manager can cause a host to fail and require a reboot.
• A soft lockup and potential crash might occur when using an XFS SR with a PERC12 RAID controller.
• Sometimes, the forget SR operation can fail.
• When unpausing after a snapshot, read caching can fail to activate.
• On hosts with user-supplied certificates installed, sometimes the toolstack can fail to start.
• The toolstack fails to start when the host’s PEM does not have its private key followed by a certificate.
• Sometimes, XenServer can’t initialize Workload Balancing with a CA-signed certificate.
• When a VM is created in XenCenter, the Console tab for the VM can show the DVD option as not available.
• When the number of hosts in a pool is large, sometimes high availability (HA) can’t process heartbeats in time. As a result, the host whose heartbeats can’t be processed is marked as offline and self-fences.
• The pool coordinator is unable to join a clustered pool after applying updates.
• After a host successfully joins a pool after an offline update, XenCenter can show the incorrect state for this host.
• Sometimes, the synchronization of updates on a pool never completes.
• The rrd2csv command prints out a list of comma-separated metrics names, but it doesn’t accept this list as command-line arguments.
• RRDs for “Gauge” and absolute data sources change for those constant values.
• Some RRD-derived metrics can be incorrect.

These updates contain upstream code changes for the following issues:

• CVE-2024-12084
• CVE-2024-12085
• CVE-2024-12086
• CVE-2024-12087
• CVE-2024-12088
• CVE-2024-12747

These updates contain the following improvements:

• Update the Intel microcode to the IPU 2025.1 drop.
• Update the Intel ice driver to version 1.15.5.
• Improvements to logging.
• Enable log collection for telemetry data through license servers. For more information, see Data governance.

Jan 22, 2025

Checksum: 2092b4666f05e32031b12379e8bc32cce9f239f4765e438a0db7b7ee124a8a63

These updates contain fixes for the following issues:

• A bug in the handling of read-through caching in Intellicache.
• An issue where an incorrect GSO type is set on hardware GRO packets on BCM5750X NICs.

Jan 20, 2025

Checksum: 14a67f822a08857c10ffea94a0d18e973bf65ab2025649b46937541e9a00f23e

These updates contain fixes for the following issues:

• On a pool with GFS2 clustering enabled, the update process can fail when you update from an old version of the toolstack to the latest normal version. This update causes the updated host to not be able to join the cluster and, as a result, makes the GFS2 SR unusable.

Jan 06, 2025

Checksum: 67dc588f3fb5cb1f34055d97675d53e612118e544ed195146f9ed29e61f18459

These updates include the following new features:

• Support for Changed Block Tracking to GFS2 and XFS Storage Repository types to enable optimized backup solutions.

These updates contain fixes for the following issues:

• Fix garbage collection issues in GFS2.
• Intermittently, the storage management code for GFS2 and XFS failed to enable the accelerated storage devices.
• The toolstack does not verify that the host’s storage manager supports changed block tracking (CBT) before plugging a VBD for a CBT-enabled VDI.
• Intellicache does not correctly populate the local cache when reading VM private data from the remote storage.
• Issues with role-based access control, cross-pool migration using the xe CLI, and pool join.

These updates include the following improvements:

• Increased parallelization during VM startup for improved performance.
• Long-running VDI migrations now use asynchronous connections, reducing the risk of timeouts and failures.
• Corrected reporting of RRD CPU and network metrics.
• Alerts are now raised in XenCenter if the storage subsystem is unable to perform data merging after deletion of snapshots due to a lack of space.
• Add the capability to xenserver-status-report to gather SCSI device provisioning modes.
• Update AMD microcode to 2024-11-21 drop
• Improvements to the performance and resilience of background coalesce operations on SMAPIv3 SRs such as XFS and GFS2.
• Improvements to the efficiency of the xapi database, as well as Active Directory authentication.

---

Information:

All updates following this note are included in the installation ISO available on https://www.xenserver.com/downloads from December 10, 2024. After installing a new XenServer host from the ISO, only the updates listed before this note are required to be applied to your new host.

Dec 9, 2024

Checksum: a0552bc72ff7e18cb19e0a16ba72f0482697147fccb80abea4dec6273ca84e3c

These updates contain fixes for the following issues:

• Fix migration of VMs from Citrix Hypervisor 8.2 Cumulative Update 1 to XenServer 8.4 on Sapphire Rapids CPUs.
• In some circumstances the number of pIRQs for dom0 can be calculated incorrectly. As a result certain devices (for example, NICs) might not operate correctly.

These updates include the following improvements:

• Add initial support for AMD Turin CPUs.

Nov 27, 2024

Checksum: 1f743e21b4fe694ff98c7b2733e4e40283083b9c4428ab818139bce8b9256697

This update contain fixes for the following issues:

• The incorrect CSS expiry date was displayed in XenCenter alerts when the license server is temporarily inaccessible.
• When adding a host to a pool, XenCenter performs a case-sensitive Active Directory domain check, which might prevent hosts with the same domain name (differing only by case) from joining the pool.
• User certificates do not have SHA256 or SHA1 fingerprints after upgrading

This update includes the following improvements:

• The Windows Server 2025 guest template is no longer in preview and is now fully supported.
• Update the Intel i40e driver to 2.25.11.
• Update third party libraries.
• Allow CA Certificates with no corresponding file to be removed with –force.
• Remove redundant log lines in xensource.log.

Nov 12, 2024

Checksum: e144b39fae499afb1b99dca54d881692f0cf3ac305c0b16bf22cbc0cc0cb47de

These updates include security fixes. For more information, see the XenServer and Citrix Hypervisor Security Update for CVE-2024-45818.

These updates include the following improvements:

• Update the Intel microcode to the IPU 2024.4 drop.

Oct 30, 2024

Checksum: f628a2a4a31d60754d9f08d9c98c23299d8b54ed6ac83e3ded7e108a15e33b60

These updates contain fixes for the following issues:

• On GFS2 and XFS SRs, a corruption issue might occur when taking an offline snapshot of a VDI that had been resized after creation, if and only if no data had been written to the VDI since the last snapshot. Online snapshots and other SRs are not affected.
• Older versions of the GFS2 storage repository might leave stray garbage collection marker files behind, preventing the use of the associated virtual disks. Stale marker files are now removed on startup.
• Possible crashes during some operations.

These updates include the following improvements:

• Improved reliability of the toolstack when under load.

Oct 21, 2024

Checksum: 5d651331af654bd851d603153450b8243fc4894224d2bd11c55121b4d7f8f9ed

These updates contain fixes for the following issues:

• A performance regression affecting writes to newly created virtual disk images (VDIs) on GFS2 and XFS storage repository (SR) types is fixed in this update. This issue affects VDIs created after the software updates released to Early Access on 9 October 2024 and to Normal on 16 October 2024. VDIs created before these updates, or after the update published on 21 October 2024, are unaffected.

  While this update resolves the performance regression, it does not automatically restore performance for impacted VMs due to the structure of the backing file created during the regression period. To restore performance:

  • For non-persistent or layered VMs (managed with Citrix Virtual Apps and Desktops MCS): Perform a base image update.
  • For persistent VMs (including master images): Take a snapshot to create a new backing file for future writes, which resolves the performance regression. Keep the snapshot until a future XenServer update is released to prevent the issue from reoccurring. Deleting it prematurely could result in the previous incorrect metadata structure being reapplied, reintroducing the performance issue.
  • For test VMs: Recreate them to resolve the issue.

Oct 16, 2024

Checksum: 388db9922915085c50ca4afb1b73b6f748905d752447988206ff45a69d424418

These updates include the following new features:

• Preview support for a new guest operating system: Windows Server 2025 (64-bit).

  Note:

  • When installing Windows Server 2025 VMs, having two disks attached might cause the VM to hang during boot. To avoid this issue, complete the installation with a single disk. Next, install VM Tools for Windows on the VM and reboot to finalize the installation. Once complete, you can safely attach the second disk.

  • If you boot a large number of Windows Server 2025 VMs on a single host, some might fail to start.

  For more information about the known issues for Windows guests, see Windows guests.

These updates contain fixes for the following issues:

• For XFS SRs, you cannot set the name or description of the SR.
• Bugfixes and improvements for SMAPIv3 SR types.
• The toolstack does not obtain the correct utilization numbers from a GFS2 SR.
• When an API client updates the blocked operations on a VM, XenCenter does not correctly update the allowed operations, resulting in certain permitted actions being incorrectly blocked.
• Fix a memory leak in xenopsd and implement memory tracking to prevent future leaks.
• The I/O priority management slice stops even though there are running VMs.

These updates contain upstream code changes for the following issues:

• CVE-2018-20679

These updates includes the following improvements:

• Improve XAPI performance by optimizing session management to refresh ‘last active’ status only when necessary, reducing database locks during high load.
• Monitor SR health and issue warnings in xapi when SR health is suboptimal.

Oct 02, 2024

Checksum: 0a4f1f9bf4df281ecb51eeaad4625c420c96fdf7bf81c8587dec39b73d3492e9

Important: These updates introduce a new restriction to Trial Edition. You can now use XenServer fora 90-day trial period after applying these updates. After the 90-day trial period expires, no VMs will start on your Trial Edition hosts and pools.

These updates include the following new features:

• VM anti-affinity: You can now assign your VMs to anti-affinity placement groups that are started on hosts in your pool according to the following anti-affinity placement rules:

  1. No single host is the only place a VM of a particular group is running.
  2. The count of VMs within the group for each host is as even as possible.

  When a VM in one of these groups is started or evacuated from a host, XenServer chooses to place the VM on a host that enables the VM group to follow these rules as closely as possible.

  For more information, see VM placement.

• Preview support for a new guest operating system: Ubuntu 24.04 (64-bit).

These updates contain fixes for the following issues:

• For some configurations of iSCSI SAN the expected number of iSCSI sessions were not created, reducing the effectiveness of multipath.
• The fan on Lenovo AMD systems is always at full speed and DIMM temperatures are not reported correctly by the BMC.
• A rare boot failure.
• A race condition that can block MCS base image updates.

These updates include the following improvements:

• The following guests templates are now no longer in preview and are now fully supported: Rocky Linux 9, Red Hat Enterprise Linux 9, CentOS Stream 9, Debian Bookworm 12.
• Update driver qla2xxx to v10.02.12.01-k.
• Auto-completion in the xe CLI has been improved.

Sep 27, 2024

Checksum: 14889ec8a54946a0a51d33598a8269df2e7a81546b8c73e704483ead632acef2

These updates contain fixes for the following issues:

• In certain iSCSI SAN configurations, the expected number of iSCSI sessions were not created, reducing multipath effectiveness.
• Improve the storage manager upgrade logic to ensure the correct restart of certain locking services.

These updates include the following improvements:

• Updates to the Storage Manager functionality.

Sep 24, 2024

Checksum: ae4d1053e27d438c5f5fd1495703ce3fcfec01fe828a3f619d74c54a89a082e1

These updates include security fixes. For more information, see the XenServer and Citrix Hypervisor Security Update for CVE-2024-45817.

Sep 12, 2024

Checksum: 4353fe7183c42ec7707537a5c9649d58e597181f18763ef73995f13ef00df353

These updates contain fixes for the following issues:

• The quorum of cluster is not updated after a host leaves a pool.
• The performance data doesn’t appear after adding a new GFS2 or XFS SR backed virtual disk.
• The multicast traffic might not be forwarded correctly when the IGMP snooping is enabled.
• If a host with an XFS SR and a running VM on the SR is hard rebooted, the VM cannot be started after reboot.

These updates contain upstream code changes for the following issues:

• CVE-2024-31145

These updates include the following improvements:

• Update the Intel microcode to the IPU 2024.3 drop for Comet Lake CPUs.
• Add distributed tracing for external authentication and HTTP layer functions.
• Update microsemi-smartpqi to version 2.1.30-031.

Aug 27, 2024

Checksum: 23dac6573d9699cf951899757a9ff3586b815342e08d1f40f361346c2c24e47a

These updates restore the metadata backup/restore functionality present in prior versions of XenServer/Citrix Hypervisor. For more information, see Backup and restore capabilities in XenServer xsconsole.

These updates contain fixes for the following issues:

• A rare intermittent failure in the LVHD SR operation.
• Internal error when requesting the metrics of a VM which doesn’t reside on any host.
• The fingerprint_sha256 of certificate might be lost when updating to xapi v24.19.2.

These updates include the following improvements:

• Improvements to the xen-hvmcrash utility which can be used to crash a VM for troubleshooting purposes.
• Improve the connection performance on the client side when using XenAPI.py.
• Add power measurements data “DCMI-power-reading” in RRD.
• Update Intel microcode to the IPU 2024.3 drop.

Aug 07, 2024

Checksum: 235dced393357dc5e9f513329020807d5cf2414c37fa908206a7e7249b0faec8

These updates contain fixes for the following issues:

• A race condition in joining a XenServer pool cluster which causes the error “GFS2 cluster state is inconsistent”.
• A typo in the error message reported when a XenServer pool can’t be authenticated when connecting a XenServer Workload Balancing appliance.
• VM.hard_shutdown gets stuck when it attempts to cancel another VM.clean_shutdown session that has already been logged out.
• Java SDK fails marshalling on unknown properties.
• Fix for rare datapath crash occurring on VM start for GFS2 and XFS storage types.
• A rare bug can cause the VM I/O handler to not start correctly.
• Crash data is not collected when using hardware with Intel Xeon Gen3 (or newer) CPUs with the BIOS configuration set to “CPU Physical Address Limit”.

These updates include the following improvements:

• Add support for the SHA1 fingerprint of a XenServer certificate.
• Update the Qlogic qla2xxx driver to v10.02.11.00-k.
• Updates to Storage Manager.

Jul 18, 2024

Checksum: 3e03abdfd0f69ea951af221ac9c3d1e400081a09dfc96465d03ebe44501a8e43

These updates contain fixes for the following issues:

• In rare conditions, the QEMU Storage I/O processor used by the GFS2 and XFS Storage Repository types can crash as the associated virtual machine transitions from emulated to paravirtual storage. This crash causes the virtual machine to lose access to its virtual disks and fail to boot.
• When creating an iSCSI SR by using xsconsole, xsconsole displays a “timed out” error message even when the SR is created successfully.
• The HTTPS is used unnecessarily in localhost VM migration.
• Distributed tracing: An issue in instrument which would cause errors like “load() missing 1 required positional argument: ‘sr_uuid’”.
• A performance issue in intel-i40e.
• When requesting bug-report archives, tapdisk logs are not included in the full bug-report archive.
• When requesting bug-report archives, collected kernel module infos are not complete in rare cases.

These updates include the following improvements:

• Remove deprecated iovirt plugin from the toolstack.
• Improvements to distributed tracing.
• Add new SR status “Unreachable” and “Unavailable”. They were mapped to “Recovering” before.

Jul 16, 2024

Checksum: 8c7a5ce6879077426cfc04d2a4e34a27bc119a0a916ca6d96bbd2edb2740819e

These updates include security fixes. For more information, see the XenServer and Citrix Hypervisor Security Update for CVE-2024-31143 and CVE-2024-31144.

Jul 04, 2024

Checksum: 894d747672c6ab2ae734882365fa853420c3c5bb40d4c335cc860ca60aeba803

These updates contain fixes for the following issues:

• Several rare issues in the coalesce of deleted snapshots.

These updates contain upstream code changes for the following issues:

• Additional case of CVE-2023-45229 when handling DHCPv6 options.
• CVE-2023-45236 - Use of predictable TCP Initial Sequence Numbers.
• CVE-2023-45237 - Use of a Weak PseudoRandom Number Generator.

These updates include the following improvements:

• Improvements to logging around XFS and GFS2 SRs.
• The OCaml compiler has been updated to 4.14.2. This improves stability in the management daemons.

Jun 20, 2024

These updates contain fixes for the following issues:

• A fix for a regression introduced in the previous update. The regression would cause a Citrix Hypervisor 8.2 CU1 pool with clustering configured to fail to RPU to XenServer 8.4.
• When using DHCP with network adaptors used for software-boot-from-iSCSI, the connectivity to storage becomes non-functional after the connection is dropped, rendering the hosts unusable.
• VGPU VM start fails with “No free virtual function found”. As part of a start, resources like VGPU are allocated for a VM in “scheduled_to..” fields. These are not cleared when the VM start fails.
• When connecting to the same XenServer pool with multiple instances of XenCenter, some instances might not show available updates.
• Fixes for storage management.

These updates include the following improvements:

• The PVS-Accelerator is now supported with PVS targets that stream over IPv6-based protocols.
• Reduce the amount of old log files created by ensuring that empty log files are not rotated.
• Update python-hwinfo to 0.1.11.
• Remove gnu-free-sans-fonts package.
• Ports of AD controllers are now taken into account on setup. Previously port 88 was used for all of them.
• Add more trace points and attributes in distributed tracing.
• Reduce log spam of gpumon and rrdd.

Jun 11, 2024

Checksum: e780184d335733087c1cb249061023d7db61d071b4c7d629398959d51f1426dc

These updates include security fixes. For more information, see the XenServer and Citrix Hypervisor Security Update for CVE-2024-5661.

Jun 04, 2024

Checksum: 12af14e8b2f9ad0d9ac53b8044e4cd9349bbaf7bcf9378b19f08040b07572aa4

These updates contain the following new feature:

• Add I/O statistics reporting for GFS2 and XFS SRs, to display in the XenCenter VM performance graphs.

These updates contain fixes for the following issues:

• General performance and bug fixes for post delete snapshot cleanup operations.
• Host backups are interrupted by an error.
• When reloading its configuration, perfmon crashes.
• You cannot export VDIs to VHD files when the former has a base VDI.
• When shutting down a host, a VM can encounter errors when writing to the TPM.
• Fix for some issues with upgrading.

These updates include the following improvements:

• Update the Microsemi smartpqi driver to 2.1.28-025.
• Update pci.ids to version 2024.04.11.
• Make coalesce of deleted snapshots more efficient on GFS2 and XFS SRs.
• Improvements the TPM services for VMs.
• Metadata export for snapshot has been enabled. Device types can be excluded from the export.

Jun 03, 2024

Checksum: 3aa8976982173fe9b7daf744d26f5418c91618777bfa89dcf07cf4e0962a64ae

These updates include the following improvements:

• Add the Intel igc driver - version 5.10.214-3.

These updates also include improvements that will be included in the next release of the installer.

May 20, 2024

Checksum: cc315022075aa4186d06e6f05a5bafbb16007079ba374548b12e4b1d1b9135b4

These updates contain fixes for the following issues:

• Fix a bug in RTC emulation for HVM guests that occasionally causes OVMF to fail an assertion.
• Fix a bug in livepatch application when CET-IBT is active, leading to a full host crash.
• Fix a heterogeneous CPU levelling bug between Ice Lake and Cascade Lake.

These updates include the following improvements:

• Update to Xen 4.17.4.

May 14, 2024

Checksum: 936b99500931cc5449938e74053a961c6274b8c93dc9d01c0929085d72becab7

These updates include the following improvements:

• Update Intel microcode to the IPU 2024.2 drop.
• Update AMD microcode to the 2024-05-03 drop.

May 07, 2024

Checksum: aad9014d7a618f7cba0332b9bc4c95f9faee096c6495efb5d31d222a017e7c5b

These updates contain the following new feature:

• These guest templates now support UEFI and Secure Boot:

  • Rocky Linux 8
  • Rocky Linux 9 (preview)
  • SUSE Linux Enterprise 15
  • Debian Bookworm 12 (preview)
  • Oracle Linux 8

These updates contain fixes for the following issues:

• Under some conditions DLM control daemon will fail to join a lockspace, preventing cluster operations from functioning.
• Some devices that are not intended for use for LVM volumes were not excluded from being scanned, which can cause operations to fail.
• Post-install warning on pvsproxy.

These updates include the following improvements:

• Add xsconsole “Configure Network Time” option for NTP control.

Apr 26, 2024

Checksum: c11e016b345e5119adb4f9edaffe3537cbf64ed252e3e7caebd30b380ec2a8b4

These updates contain fixes for the following issues:

• Enabling PVS-Accelerator in-memory cache mode fails with a script error.

Apr 16, 2024

Checksum: dc7acd63c2c5a920e77328070d7396dcb1df03ba670424fae3f4a29f47ff1a64

These updates contain fixes for the following issues:

• Sometimes, when XAPI attempts to write logs, it is prevented from doing so for a limited amount of time. This behavior is caused by an issue in log rotation.
• If you create a new installation of XenServer on a host with a local XFS SR on an NVMe device, your local storage does not attach on boot. The action fails with the error: “Raised Server_error(SR_BACKEND_FAILURE, [ FileNotFoundError; [Errno 2] No such file or directory: ‘/sys/block/nvme0n/queue/scheduler’ ])”. After applying this fix, you can attach the local storage manually.

These updates include the following improvements:

• Improve the configuration for USB network cards.
• Improvements to plug/unplug behaviour on GFS2 and XFS SRs.
• Improvements to USB device handling.
• Addition of distributed tracing information to the storage manager.

Apr 11, 2024

Checksum: 617080b043b1c3766f9ffb5183616cbf7117d78c2631317fa614ec4699213e5e

These updates include security fixes. For more information, see the XenServer and Citrix Hypervisor Security Update for CVE-2023-46842, CVE-2024-2201 and CVE-2024-31142.

Apr 02, 2024

Checksum: 574edaa4f5fe4960882e3a7ccd3de3084df6b89624dfa63fb7253e73120f1a41

These updates include the following improvements:

• Reduce QEMU’s idle CPU usage.
• Update the Cisco enic driver to 4.5.0.7.
• Update the Cisco fnic driver to 2.0.0.90.

Mar 19, 2024

Checksum: e7dd9deb95cad01b70bac2d02aec7fa0d649c16b55cdd91d32affa6377631bae

These updates contain fixes for the following issues:

• Fix the names of some SR types in xsconsole.
• Upstream code changes that may reduce false-positive reports for CVE-2023-38545.

These updates include the following improvements:

• Upstream code changes that may reduce false-positive reports for CVE-2023-28486.

Mar 18, 2024

Checksum: 49b11e4371d94e6edbc3f39d1a9944efe082c870587642903de0b734caf3896b

Important:

Update to this level, or later, to be in a supported state.

These updates contain fixes for the following issues:

• If the pool coordinator is not running or the toolstack is being restarted, vTPM operations performed by the user or by Windows in the background might fail.
• After upgrading from Citrix Hypervisor 8.2 CU1, the background maintenance services for GFS2 SRs do not start correctly.

Mar 12, 2024

Checksum: b43aeaa6613a4b89d3d907cdb3704e0aca00c4d1122a01f1c4abac116602c2e4

These updates include the following changes to XenServer:

• If you use XenServer 8.4 preview with a Citrix Virtual Apps and Desktops license, this license is deprecated and is no longer supported with XenServer 8.4.

  To run a Citrix Virtual Apps and Desktops workload on a XenServer 8.4 pool, you must get a XenServer Premium Edition license for all hosts in the pool. For more information, visit the XenServer website.

  XenServer is now an entitlement of the Citrix for Private Cloud, Citrix Universal Hybrid Multi-Cloud, Citrix Universal MSP, and Citrix Platform License subscriptions for running your Citrix workloads. Read more.

These updates contain fixes for the following issues:

• XSA-452 CVE-2023-28746

  For more information, see the Citrix Hypervisor Security Update for CVE-2023-39368 and CVE-2023-38575.

These updates include the following improvements:

• Update the Intel IPU 2024.1 microcode release.

Mar 07, 2024

Checksum: 541fac9e361504d8c568fb6c5bbdef2442d5674ea5e17a2f1cf999c51e5b0608

Note:

Before applying these updates, update your XenCenter to version 2024.1.0 or later. The latest version of XenCenter is available at https://xenserver.com/downloads.

These updates contain the following feature:

• The “preview” label has been removed from the Windows 11 template. This guest operating system is ready to be fully supported when XenServer 8.4 moves from preview to fully supported in production.

These updates contain fixes for the following issues:

• When collecting host and guest performance statistics, the collected RRD files are often not up-to-date.
• In XenServer 8.4 clusters with GFS2 SRs, when collecting the XenServer databases, the cluster daemon database is not collected.
• When collecting a server status report, if you request a full bug-report archive and the file size limit of a database for xcp-rrdd-plugins is exceeded, the logfiles of xcp-rrdd-plugin are not collected.
• When collecting a server status report, if you use SSH login:
  • The interactive mode where you confirm individual files for collection does not work without specific user input.
  • When downloading uncompressed RRD data with a deprecated method, the VM RRDs are not collected.
• CVE-2023-45230 - Buffer overflow in the DHCPv6 client via a long Server ID option.
• CVE-2023-45231 - Out of Bounds read when handling a ND Redirect message with truncated options.
• CVE-2023-45232 - Infinite loop when parsing unknown options in the Destination Options header.
• CVE-2023-45233 - Infinite loop when parsing a PadN option in the Destination Options header.
• CVE-2023-45234 - Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message.
• CVE-2023-45235 - Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message.
• An issue with the use of vTPM while the toolstack is being restarted.
• The status of NIC bonds is not reflected correctly.

These updates include the following improvements:

• Improvements to the way you apply software updates to your XenServer hosts and pools. For more information, see Apply updates.
• Update the multipath configuration used for PURE FlashArray SAN to match the vendors recommendations.
• Improve error messages when file SR types are read-only.
• Improvements to distributed tracing.

Feb 28, 2024

Checksum: 57b11c890cc12413b41310e4aef70b10589b50663ba1f5371e3a70c46bd7fa4d

These updates contain the following new feature:

• Monitor host and dom0 resources with SNMP. This feature can be used from the next version of XenCenter.

These updates contain fixes for the following issues:

• If you try to enable SR-IOV on an Intel E810 NIC in XenCenter, the VF assigned to a VM does not work after the VM boots.
• XSA-451 CVE-2023-46841.
• A migration issue with VMs that previously saw CMP_LEGACY.

These updates include the following improvements:

• Update Xen from 4.13 to 4.17.
• Various improvements to GFS2 datapath operations.

Feb 15, 2024

Checksum: 4ca53a5e440cd52b4b179b2dfb208e159cf16e918f53130b227eae3fb7b3d596

These updates include the following new feature:

• Add a new check (check_multipath) to the NRPE service to enable monitoring of the multipath status.

These updates contain fixes for the following issues:

• When there are separate independent Target Portal Groups within the IQN, XenServer cannot log into all iSCSI portals.
• When creating an SMB ISO SR share, it is no longer necessary to supply credentials when connecting to an SMB server that permits guest access.
• Part of the toolstack may unexpectedly stop running.
• You are unable to import a suspended Windows 11 VM that has been exported as an XVA with power state preservation.
• When a VM with vTPM is started or quickly migrated back and forth between pools, a race condition can occur.
• pool-eject operations run in parallel can cause TLS verification errors.
• Fixes for several low-probability issues with GFS2 SRs.

These updates include the following improvements:

• Update the Qlogic fastlinq driver to 8.74.0.2.
• Improvements to distributed tracing.

Feb 01, 2024

Checksum: bef04584f387457b7665a7f56b3f01be4c03edf67c383875ecbc8ebe92b73786

These updates include the following improvements:

• Support for UEFI boot and Secure Boot for Linux guest operating systems. For more information, see Guest UEFI boot and Secure Boot.
• Provide more detailed information about a XenServer host’s SHA256 and SHA1 TLS certificates in the host console view in XenCenter.

Jan 23, 2024

Checksum: a74ad78f7b0537f82cb5069c6b781696829f4053b7a06020ab1436332f684ff1

These updates include security fixes. For more information, see the Citrix Hypervisor Security Bulletin for CVE-2023-46838.

Jan 18, 2024

Checksum: 1633ab16bf0a6b458c4f863b07328e07ee85371fed34145050552c02e46657da

These updates include the following improvements:

• Update XenServer VM Tools for Linux to version 8.4.0-1, available to download from the XenServer downloads page. From this version, you can use the install.sh script to uninstall XenServer VM Tools for Linux. For more information, see Uninstall XenServer VM Tools for Linux.
• Ensure that the XenServer welcome message is always displayed when connecting to a XenServer host console and that the message is correctly line wrapped.

Jan 8, 2024

Checksum: 6240ec0cbc29f6f5204f7f6af7bbce28e96e9dfb9e001a4f0cfa4609214f9d8e

These updates contain fixes for the following issues:

• Sometimes, after migrating a VM from one pool to another, the VM’s alerts are not successfully copied to the destination pool or removed from the source pool.
• Sometimes the pool database is not restored from the redo-log (part of the high availability feature).

These updates include the following improvements:

• Update the Microsemi smartpqi driver to 2.1.26_030.
• Update the AMD microcode to the 2023-12-05 drop.
• Improvements to distributed tracing.

Dec 14, 2023

Checksum: 95f70cca5fd3b79081c30837352ed941a7d497899062d892fbc2aa51daacfd78

These updates contain fixes for the following issues:

• When using multipathing with Dell EqualLogic PS Series Firmware v7.x, you might see iSCSI protocol errors.

Nov 30, 2023

Checksum: 1633ab16bf0a6b458c4f863b07328e07ee85371fed34145050552c02e46657da

These updates contain fixes for the following issues:

• Sometimes the redo-log (part of the high availability feature) does not replay all database writes.
• When running the vdi-copy command to copy a VDI to an SR, XenServer fails to correctly report the progress of the operation.
• In XenCenter, customizing a template and then exporting and reimporting it can result in the template failing to import.

These updates include the following improvements:

• Add driver for Dell PERC12 (driver version: mpi3mr 8.1.4.0.0).
• General API improvements.
• The “preview” label has been removed from vTPM support. This means that vTPM is ready to be fully supported when XenServer 8.4 moves from preview to fully supported in production.

Nov 22, 2023

Checksum: 4abd37e1e88675bf3793b4704786a97ba43e2a455989546de07f934f20e28135

These updates include the following improvements:

• The “preview” label has been removed from the Ubuntu 22.04 template. This guest operating system is ready to be fully supported when XenServer 8.4 moves from preview to fully supported in production.

Nov 15, 2023

Checksum: 052f8594042ceeb93bbe7d4dd75fc7fcd8af7092c3cd08b2522b6bd2a6694c17

These updates include the following improvements:

• General SDK improvements and improved API login times.
• Update Open vSwitch to v2.17.7.

Nov 14, 2023

Checksum: 82dc14f34880f471e23467c1cc296bd7b9ca6a670ac71950e6db88019bb47a13

These updates include security fixes. For more information, see the Citrix Hypervisor Security Bulletin for CVE-2023-23583 and CVE-2023-46835.

Nov 6, 2023

Checksum: 4d516d4b6c72eb3be4f60e78371db5fde8b6292395ddaf411faf52507f22f516

These updates contain fixes for the following issues:

• Deploying Windows using PXE boot and Configuration Manager can cause Windows to hang.
• If time synchronization is disabled, Windows VMs do not return the correct time.

These updates include the following improvements:

• UEFI boot mode Windows VMs now show the Windows logo during boot instead of the Tianocore logo.

Oct 23, 2023

Checksum: 85e8edbaf7469a29cc56fe6880e93c2618fb90002d2d4cdf0b372719413c4525

These updates include general fixes and improvements.

Oct 16, 2023

Checkcum: 7623587c09c7198237bc9dd673fba33307fbaee18e0baec50c1e2ddbee165b91

These updates contain the following new feature:

• These updates include support for the following guest operating systems:

  • Debian Bookworm 12 (preview)
  • Rocky Linux 9 (preview)
  • CentOS Stream 9 (preview)

  Note:

  Customers who wish to use these guest operating systems must also install XenServer VM Tools for Linux v8.3.1-1 or later, available to download from the XenServer product downloads page.

These updates include the following improvements:

• Update the Mellanox mlnx_en driver to 5.9-0.5.5.0.

Oct 10, 2023

Checksum: 0ab01aa0c5623b52219b279b48f6b13f8db4a0a699a25b61a7aa35b39243ca89

These updates include security fixes. For more information, see the security bulletin.

Oct 5, 2023

Checksum: 7ef0331921b2d46b882efa76ea9d6a4c287868dd9a3b0eae4a6d15ba2cf29fbe

These updates include support for the Red Hat Enterprise Linux 9 operating system. Refer to the Red Hat Enterprise Linux 9 release notes for further technical information.

Note:

Customers who wish to use this guest OS must also install Citrix VM Tools for Linux v8.3.1-1 or later, available to download from the XenServer product downloads page.

Sep 21, 2023

These updates include general fixes and improvements.

Sep 14, 2023

These updates include the following improvements:

• Enable interrupt balancing for Fibre Channel (FC) PCI devices. This improves performance on fast FC HBA SRs, especially if multipathing is used.
• Fix for AMD errata #1474. Disable C6 after 1000 days of uptime on AMD Zen2 systems to avoid a crash at ~1044 days.

Sep 4, 2023

These updates contain fixes for the following issues:

• Performance metrics are not available for GFS2 SRs and disks on these SRs.
• You cannot snapshot or checkpoint a suspended VM if that VM has a vTPM attached.
• If a XenServer host crashes, or shuts down abruptly, starting more Windows 11 VMs or migrating more Windows 11 VMs onto that host eventually fails.
• If, when iSCSI SRs are attached, not all the possible paths are available (for example, an offline controller remote port is down), the SR does not have additional iSCSI sessions added when those remote ports are accessible again.

These updates include the following improvements:

• Update the Intel ice driver to v1.11.17.1.
• Performance improvements for GFS2.